Got the instructions from civic-eg.com for the valve clearance adjustment. :) Just follow the instructions in the forum.
Checking the clearance on the intake side.
It was varying about 0.002"-0.004" difference before the adjustments which is causing the engine to be noisier then usual.
Do remember to make sure u have your car park overnight before commencing the job. If not, the measurements will not accurate due to heat expansion.
The difference after the adjustment??
1) Engine is quieter
2) The AFR readings are more stable now and fluctuate less then before, which resulted in a smoother ride.
3) The feel in power increment is significant.